Pump mechanism.



No. 819,295. .PATENVTED MAY 1, 1 906. s. W. LUITWIELER. PUMP MECHANISM.

APPLICATION FILED DEG.5,1898.

4 SHEETSSHEET 1 Wine/9s as l No. 819,295. PATENTED MAY 1, 1906 W. LUITWIELER. PUMP MECHANISM.

APPLICATION FILED D1305 1898.

4 SHEETS-SHEET 2.

Witnesses. I

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No. 819,295. PATENTED MAY 1, 1906 s. W. 'LUITWIELER. PUMP MECHANISM.

APPLICATION FILED DEO.5,1898.

4 SHEETS-SHEBT 3.

WMne/ss 19. v I I Ivy/671,507: I

p f fi PATENTED MAY 1, 1906.

S. W. LUITWIELER. PUMP MECHANISM.

APPLICATION FILED DEC. 5, 1898.

4 SHEETSSHEET minesses Inventor.

\5 W1 i mbg murals stares s rens ora ion SAMUEL W. LUITWIELER,- OF LOS ANGELES, CALIFORNIA;

PUMP ECHANEEW'H No. siaeee.

Specification of Letters Patent.

Patented may 1, 1906.

der, one operating above the other and each connected to a separate pump rod, the pump-rod of the upper bucket or piston being tubular and the pump-rod of the lower bucket or piston being passed and operating through the tubular rod of the upper bucket or piston, the tubular pump rod passing through a gland and stu'lling-box in the upper part of the pump and the pump-rod of the lower bucket or plunger passing through a gland and stufling box in the upper art of f the tubular pump-rodof which the ollowing is a specification. I

The upper ends of the two pump-rods are respectively connected each to one of two camiramcs. The tubular pump-rod is connected to the lower part of its cam-frame by bein passed into an offset projecting laterall trom one side of the cam-frame, and the T0 of the lower plunger, which operates as aforesaid. through the tubular rod of the upper plunger, is attached to an offset project ing from the upper part of the other camirame. Thus there is aseparate cam-frame for each pump-rod.

The two cam-flames in respect to the arrangement of their several parts and the directions in which their several parts are situated are each the opposite of the otherthat is to say, the several parts whichare operated upon by the cams hereinafter described project in opposite directions, the object of which arrangement is to enable the oil-sets hereinbefored referre to to be made as short as possible and to bring the operating mechanism as closely together as possible.

The cam-frames are constructed with Slld8- blocks which operate upon vertical slide-hers carried in the main framing of the pumping I machinery, and the cam-frames are also conried upon a cam-shaft which rotates transversely to the main framing, and it is oper-- driving pulley.

' got rid of.

ated by means ofa pinion in ear with a toothed wheel upon one end 0 the shaft. The toothed pinion is carried upon a countershaft, at the other "end of which is a belt--- Two vertical slide-bars are carrie in the main framing for each camframe to be moved upward-and downward upon b the rotation of the cams. I On t e annexed sheets of drawings, Figure 1 is a front elevation of my new or improved mechanism for operating pump rods and buckets of douhle plunger pumps of the kind hereinoefore referred to. Fig. 2 is a side elevation of the same. Fig. 3 is a transverse section of certain parts of the said pump mechanism with parts shown in side elevation. Fig. 4 is a plan of my improved pump mechanism corresponding to Figs. 1, 2, and 3. Fig. 5 is a side elevation 01 one of the cams-used for o crating the cam-frames, shown separately. ig. 6 is an edge elevation of Fig. 5. Fig.v 7 is a vertical section of the said cam'upon line a a, Fig. 5. Fig. 8 is an ed e elevation of the said cam with a depressed recess or groove situated at the center in place of at the side, as shown in Figs. 5 and 6. Fig. 9 is a transverse section of the cam as shown in Fig. 8.

in the drawings the pump 'l'rame is marked A. A, and there are situated vertically in this framing four slide-bars B E B B, each of which constitutes a member of a pair, upon which the slide-bloclrs C C oi each cam-frame move slidingly upward and downward as the cam-frame is alternately raised and lowered by the rotating action of the cams D and D, carried upon the camshaft E. Each pair of slide-bars B B maintains a steady vertical motion oi the cam-frames, whereby the movement of the pump-rods is always maintained parallel with their vertical axis and all lateral strains tending to bend the pump-rods are @ne of the cam-framesnamely, that one situated at the right-hand side of Fig. 1has an offset F projecting from its innerside, and into a hole in this offset the upper end. of the tubular piston-rod G is fastened, so that the cam D operates the upper piston or bucket, to which the tubular pistonrod G is attached by being connected to the offset F at the lower end of the right-hand camdrame. in the upper part of the offset F a stufling-box is constructed, and the gland H tightens the packing in the said stuffinghox, so that the inner pumpin rod I may be operated hytheleftdiand cam ame. (Shown which the cam-shaft E is situated. Thiscounter-shaft K carries a spur-pinion M, which gears into the spur-wheel N, and at the opposite end of this counter-shaft K a beltpulley O is situated, so that a driving-belt operating upon the pulley 0 drives the whole of the pump mechanism.

For the purpose of facilitating the putting together and taking asunder of the parts of the pump and for removing the pistons and piston-rods without taking apart the pumpdriving gear the upper part of the framing A is formed with a circular hole P at its center, up throu h which the pump rods and pistons can be lifted. The slide-bars B B B B enter sockets Q Q at the lower end of the main framing A and are kept in their places in the frame by means of plates R, which are held to the frame by means of the studbolts R, as shown at Figs. 1, 2, and 3.

The water raised by the pumps is discharged from the pump-head by the pipe S.

The cams D and D are of duplex constructionthat is to say, they contain two drivingsurfaces, the broader one of which presses against the upper' antifriction-rollers T and T during the upward throw of the cams D and D and the narrower one of which presses against the lower antifriction-rollers T and T during the downward throw of the said cams D and D. The formation of the driving-surface of the cam will be better understood by reference to Figs. 5, 6, and 7, and in place of the recess 1) being made at one side, as shown in Figs. 5, 6, and 7, this recess 1; may be made in the center of the width of the camas shown in Figs. 8 and 9.

Having now described the nature of my said invention and the best system, mode, or manner I am at present acquainted with for carrying the same into practical effect, I desire to observe in conclusion that what I consider to be novel and oliginal, and therefore claim as the invention to be secured to me by Letters Patent, is as follows:

1. The combination of the framing consisting of the base, two vertical side members, and the top member, the base being that from which the pump is suspended and wherein the lower ends of the slide-bars are carried, the sides constituting and containing the bearings for the driving-shaft and camshaft, the upper member of the framing'constituting and containing the sockets through and by which the slide-bars are passed and held, having also a center opening for the lowering and raising of the pump rods and plungers, the vertical slide-bars, the drivingshaft, the cam-shaft, the cams on said shaft, the spur-pinion and spur-wheel for operating the cam-shaft, the cam-frames with their alternately-arranged offsets, the antifrictionrollers in said camframes,the pump-rods,the pump, the whole constituting an improved double-plunger pump and operating substantially as hereinbefore described and shown upon the annexed drawings.

2. The herein-described combination of the framing consisting of the base, two vertical side members, and the top member, the base being that from which the pump is suspended, the sides constituting and containing the bearings for the driving-shaft and the cam shaft, said top member having a center opening for the lowering and raising of the pump rods and plungers through, the vertical slidebars, means for carrying and supporting the slide-bars, the driving-shaft, the cam-shaft, the cams on said shaft, the spur-pinion and spur-wheel for operating the cam-shaft, the cam-frames with their alternately-arranged offsets, the antifriction-rollers in said camframes, the pump-rods, the pump, the Whole constituting an improved double-plunger pump operating substantially as hereinbefore described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

SAMUEL W. LUITWIELER.

Witnesses:

ST. JOHN DAY, JOHN SATTERWHITE. 

